V.35,no.4,Dec 2023 https://doi.org/10.5764/TCF. Journal Textile Coloration and Finishing Year / Vol., Issue, Month 2020 / V.32,no.1,Mar Title Eco-friendly Dyeing using Houttuynia cordata Extract: Dyeability and Functionality of Wool Fabrics Authors Kyunghee Son Institution/Affiliations Chonnam National University Pages/Total page pp.1 ~ 8 / 8 Language Korean Abstract The objective was to study the efficiency of Houttuynia cordata extract colorants as eco-friendly and functional dye for wool fabrics. Effects of dyeing conditions and mordanting on dye uptake, color change, and colorfastness were investigated. Also, antimicrobial activity and deodorization performance were evaluated. The Houttuynia cordata colorants showed good affinity to wool fabrics and produced YR Munsell color. The optimum condition of dyeing was 2.0% of colorants concentration(o.w.b.) at 100°C for 60 minutes under pH 5.3. Regardless of the mordant type and mordanting method, mordants improved dye uptake and the increase in dye uptake by Fe mordant was higher than that of Al mordant. Al post-mordanting and Fe mordanting changed the color of dyed fabrics with Y Munsell color. The colorfastness of un-mordanted and Al post-mordanted fabrics were excellent above grade 4. Bacteria reduction rate(Staphylococcus aureus) of wool fabrics dyed with Houttuynia cordata colorants was excellent at 98.2%. Also, the deodorization was good at 81%. The results show Houttuynia cordata colorants can be used as a functional natural dye for wool fabrics. Keywords Houttuynia cordata, wool, mordant, dyeability, antimicrobial activity, deodorization Download   Reference http://www.koreascience.or.kr/journal/OSGGBT.page